The vaccine isn't a cure-all. No one ever said it was. But it heavily reduces your chances of having lasting effects (or one extremely permanent effect), just like every vaccine ever. Nothing guarantees protection, but you seem to need it to be 100% or it's worthless. Show me one single thing in this world that is guaranteed to work 100% of the time. Literally anything. You won't be able to, because there's always a chance something will go wrong. It's all about doing the best we can to protect ourselves and others.
Seat belts save lives. Not always! Sometimes the wreck is just too terrible, and in freak cases, the belt actually makes things worse...but it's a very, VERY small percentage. You can't point to one-in-a-million problems and say "that's why I won't do it". You need to look at the rate that it helps versus how much it has the potential to harm. Vaccines have a near-zero (but nothing is ever zero percent chance) chance of causing issues, yet a near perfect rate of people not dying from Covid. That's a pretty good bet.
I'm curious what the problem here is. "It hasn't been tested for a crazy amount of time!" No, because it's pretty similar to other vaccines, and those HAVE had the test of time. I guarantee you, it went through more vigorous and thorough testing than the polio vaccine did, and that's just fine. Are you scared of needles? I mean, everyone has phobias, so just...don't watch. I certainly didn't.
If you think the vaccine is a political thing...well, show me one microbe that gives two shits who you voted for.
If you think the entire thing is a hoax, you live in the middle of nowhere and have very few friends/family. You're also incredibly lucky, as no one you know got it, or got hit with any permanent effects from it. It's not just death that's the problem, there's a lot of long term damage that *can* happen. One of my friends is a little gollum-looking skeleton now, as she can't taste anything since she got it over a year ago. She was a perfectly healthy adult under 30. This doesn't only affect the elderly.